CRUSTACEA. 
common, but is occasionally taken from deep sea by means of 
fishermen’s tackle and boats moorings. 
Ligia, Fabr. 
L. aquatica, Oliv. — A large Woodlouse, inhabiting damp places, 
and also the outskirts of the Island, where it lives under stones, &c. 
Porcellio, Latr. 
P. scaber, Latr. The small garden Woodlouse, which is abundant 
on the high parts of the Island. In gardens it is one of the most 
common insects, and frequently finds its way into houses which are 
in damp situations. 
Oniscus, Linn. 
O. asellus, Linn. — A medium-sized, Woodlouse, found abun- 
dantly in association with the last-named species. 
Order Cirripedia. 
Ooronula, Lam. 
*C. balsenaris, Gmelin. — A parasitic creature found firmly 
attached to the backs of turtle. 
Clielonobia. 
*C. caretta, Spengler. — A small parasitic creature which is com- 
monly attached to the shells ol crabs. 
Lepas. Linn. 
*L (Pentelasmis), anatifera, Linn. — Barnacles are fre- 
quently cast ashore with logs of wood, &c„ which, by floating in the 
sea have become covered with them. Old wine-bottles are some- 
times washed up so thickly covered by them as to hide almost every 
portion of the glass. At all times they may be picked up adhering 
to something or other, on Sandy Bay Beach, on the windward coast. 
Balanus, Lam. 
*B. tintinnabulum, Linn.— Masses of hard, barnacle-like shells, 
one built upon the top of the other, known as Sea Acorns, frequently 
washed on shore on the windward side of the Island. 
